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1
11 package org.eclipse.help.ui.internal.workingset;
12
13 import java.util.*;
14
15 import org.eclipse.core.runtime.*;
16 import org.eclipse.help.internal.base.*;
17 import org.eclipse.help.internal.workingset.*;
18 import org.eclipse.help.ui.internal.*;
19 import org.eclipse.help.ui.internal.ide.*;
20 import org.eclipse.jface.util.*;
21 import org.eclipse.jface.viewers.*;
22 import org.eclipse.jface.wizard.*;
23 import org.eclipse.swt.*;
24 import org.eclipse.swt.custom.*;
25 import org.eclipse.swt.events.*;
26 import org.eclipse.swt.graphics.*;
27 import org.eclipse.swt.layout.*;
28 import org.eclipse.swt.widgets.*;
29 import org.eclipse.ui.*;
30 import org.eclipse.ui.dialogs.*;
31
32
35 public class HelpWorkingSetPage extends WizardPage implements IWorkingSetPage {
36 public final static String  PAGE_ID = HelpUIPlugin.PLUGIN_ID
40 + ".HelpWorkingSetPage"; public final static String PAGE_TITLE = HelpIdeResources
42 .getString("WorkingSetPageTitle"); public final static String PAGE_DESCRIPTION = HelpIdeResources
44 .getString("WorkingSetPageDescription");
46 private Text workingSetName;
47 CheckboxTreeViewer tree;
48 private ITreeContentProvider treeContentProvider;
49 private ILabelProvider elementLabelProvider;
50
51 private boolean firstCheck;
52 IWorkingSet workingSet;
53
54
57 public HelpWorkingSetPage() {
58 super(PAGE_ID, PAGE_TITLE, null);
59 setDescription(PAGE_DESCRIPTION);
60 firstCheck = true;
61 }
62
63
66 public void createControl(Composite parent) {
67 Font font = parent.getFont();
68 initializeDialogUnits(parent);
69
70 Composite composite = new Composite(parent, SWT.NONE);
71 composite.setLayout(new GridLayout());
72 composite.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
73 setControl(composite);
74
75 Label label = new Label(composite, SWT.WRAP);
76 label.setFont(font);
77 label.setText(HelpIdeResources.getString("WorkingSetName")); GridData gd = new GridData(GridData.GRAB_HORIZONTAL
79 | GridData.HORIZONTAL_ALIGN_FILL
80 | GridData.VERTICAL_ALIGN_CENTER);
81 label.setLayoutData(gd);
82
83 workingSetName = new Text(composite, SWT.SINGLE | SWT.BORDER);
84 workingSetName.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL
85 | GridData.HORIZONTAL_ALIGN_FILL));
86 workingSetName.addModifyListener(new ModifyListener() {
87 public void modifyText(ModifyEvent e) {
88 validateInput();
89 }
90 });
91 workingSetName.setFocus();
92 workingSetName.setFont(font);
93
94 label = new Label(composite, SWT.WRAP);
95 label.setFont(font);
96 label.setText(HelpIdeResources.getString("WorkingSetContent")); gd = new GridData(GridData.GRAB_HORIZONTAL
98 | GridData.HORIZONTAL_ALIGN_FILL
99 | GridData.VERTICAL_ALIGN_CENTER);
100 label.setLayoutData(gd);
101
102 tree = new CheckboxTreeViewer(composite, SWT.BORDER | SWT.H_SCROLL
103 | SWT.V_SCROLL);
104 gd = new GridData(GridData.FILL_BOTH | GridData.GRAB_VERTICAL);
105 gd.heightHint = convertHeightInCharsToPixels(15);
106 tree.getControl().setLayoutData(gd);
107 tree.getControl().setFont(font);
108
109 treeContentProvider = new HelpWorkingSetTreeContentProvider();
110 tree.setContentProvider(treeContentProvider);
111
112 elementLabelProvider = new HelpWorkingSetElementLabelProvider();
113 tree.setLabelProvider(elementLabelProvider);
114
115 tree.setUseHashlookup(true);
116
117 tree.setInput(BaseHelpSystem.getWorkingSetManager().getRoot());
118
119 tree.addCheckStateListener(new ICheckStateListener() {
120 public void checkStateChanged(CheckStateChangedEvent event) {
121 handleCheckStateChange(event);
122 }
123 });
124
125 tree.addTreeListener(new ITreeViewerListener() {
126 public void treeCollapsed(TreeExpansionEvent event) {
127 }
128 public void treeExpanded(TreeExpansionEvent event) {
129 final Object element = event.getElement();
130 if (tree.getGrayed(element) == false)
131 BusyIndicator.showWhile(getShell().getDisplay(),
132 new Runnable () {
133 public void run() {
134 setSubtreeChecked(element, tree
135 .getChecked(element), false);
136 }
137 });
138 }
139 });
140
141 if (workingSet != null) {
142 workingSetName.setText(workingSet.getName());
143 HelpIdePlugin.getDefault().getWorkingSetSynchronizer()
145 .addWorkingSet(workingSet);
146 }
147 initializeCheckedState();
148 validateInput();
149
150 }
153
154
157 public void finish() {
158 String workingSetName = this.workingSetName.getText();
159 ArrayList elements = new ArrayList(10);
160 findCheckedElements(elements, tree.getInput());
161 if (workingSet == null) {
162 HelpWorkingSet ws = new HelpWorkingSet(
163 workingSetName,
164 (AdaptableHelpResource[]) elements
165 .toArray(new AdaptableHelpResource[elements.size()]));
166 workingSet = ws.getIWorkingSet();
167 } else {
168 workingSet.setName(workingSetName);
169 workingSet.setElements((IAdaptable[]) elements
170 .toArray(new IAdaptable[elements.size()]));
171 }
172 }
173
174
177 public IWorkingSet getSelection() {
178 return workingSet;
179 }
180
181
184 public void setSelection(IWorkingSet workingSet) {
185 Assert.isNotNull(workingSet, "Working set must not be null"); this.workingSet = workingSet;
187 if (getContainer() != null && getShell() != null
188 && workingSetName != null) {
189 firstCheck = false;
190 workingSetName.setText(workingSet.getName());
191 initializeCheckedState();
192 validateInput();
193 }
194 }
195
196 void validateInput() {
197 String errorMessage = null;
198 String newText = workingSetName.getText();
199
200 if (newText.equals(newText.trim()) == false)
201 errorMessage = HelpIdeResources.getString("WE030"); if (newText.equals("")) { if (firstCheck) {
204 setPageComplete(false);
205 firstCheck = false;
206 return;
207 } else
208 errorMessage = HelpIdeResources.getString("WE031"); }
210
211 firstCheck = false;
212
213 if (errorMessage == null
214 && (workingSet == null || newText.equals(workingSet.getName()) == false)) {
215 IWorkingSet[] workingSets = PlatformUI.getWorkbench()
216 .getWorkingSetManager().getWorkingSets();
217 for (int i = 0; i < workingSets.length; i++) {
218 if (newText.equals(workingSets[i].getName())) {
219 errorMessage = HelpIdeResources.getString("WE032"); }
221 }
222 }
223 if (errorMessage == null && tree.getCheckedElements().length == 0)
224 errorMessage = HelpIdeResources.getString("WE033");
226 setErrorMessage(errorMessage);
227 setPageComplete(errorMessage == null);
228 }
229
230 private void initializeCheckedState() {
231 if (workingSet == null)
232 return;
233
234 BusyIndicator.showWhile(getShell().getDisplay(), new Runnable () {
235 public void run() {
236 Object [] elements = workingSet.getElements();
237 tree.setCheckedElements(elements);
238 for (int i = 0; i < elements.length; i++) {
239 Object element = elements[i];
240 if (isExpandable(element))
241 setSubtreeChecked(element, true, true);
242 updateParentState(element, true);
243 }
244 }
245 });
246 }
247
248 boolean isExpandable(Object element) {
249 return treeContentProvider.hasChildren(element);
250 }
251
252 void updateParentState(Object child, boolean baseChildState) {
253 if (child == null)
254 return;
255
256 Object parent = treeContentProvider.getParent(child);
257 if (parent == null)
258 return;
259
260 boolean allSameState = true;
261 Object [] children = null;
262 children = treeContentProvider.getChildren(parent);
263
264 for (int i = children.length - 1; i >= 0; i--) {
265 if (tree.getChecked(children[i]) != baseChildState
266 || tree.getGrayed(children[i])) {
267 allSameState = false;
268 break;
269 }
270 }
271
272 tree.setGrayed(parent, !allSameState);
273 tree.setChecked(parent, !allSameState || baseChildState);
274
275 updateParentState(parent, baseChildState);
276 }
277
278 void setSubtreeChecked(Object parent, boolean state,
279 boolean checkExpandedState) {
280
281 Object [] children = treeContentProvider.getChildren(parent);
282 for (int i = children.length - 1; i >= 0; i--) {
283 Object element = children[i];
284 if (state) {
285 tree.setChecked(element, true);
286 tree.setGrayed(element, false);
287 } else
288 tree.setGrayChecked(element, false);
289 if (isExpandable(element))
290 setSubtreeChecked(element, state, checkExpandedState);
291 }
292 }
293
294 private void findCheckedElements(java.util.List checkedResources,
295 Object parent) {
296 Object [] children = treeContentProvider.getChildren(parent);
297 for (int i = 0; i < children.length; i++) {
298 if (tree.getGrayed(children[i]))
299 findCheckedElements(checkedResources, children[i]);
300 else if (tree.getChecked(children[i]))
301 checkedResources.add(children[i]);
302 }
303 }
304
305 void handleCheckStateChange(final CheckStateChangedEvent event) {
306 BusyIndicator.showWhile(getShell().getDisplay(), new Runnable () {
307 public void run() {
308 Object element = event.getElement();
309 boolean state = event.getChecked();
310 tree.setGrayed(element, false);
311 if (isExpandable(element))
312 setSubtreeChecked(element, state, state);
313
315 updateParentState(element, state);
316 validateInput();
317 }
318 });
319 }
320
321 }
322 |
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